package com.example.demo.controller;

import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@RestController
public class UploadController {
    private SimpleDateFormat sdf = new SimpleDateFormat("yyyy/mm/dd");

    @PostMapping("/upload")
    public String upload(MultipartFile uploadFile, HttpServletRequest req){
        // String realPath = req.getSession().getServletContext().getRealPath("/uploadFile");
        String realPath = "./uploadFile";
        System.out.println("========="+realPath);
        String format = sdf.format(new Date());
        File folder = new File(realPath+format);
        System.out.println("========="+folder.getAbsolutePath());
        if (!folder.isDirectory()){
            folder.mkdirs();
        }
        String oldName = uploadFile.getOriginalFilename();
        String newName = UUID.randomUUID().toString()+oldName.substring(oldName.lastIndexOf("."),oldName.length());
        System.out.println("========="+oldName+"\t"+newName);
        try {
//            uploadFile.transferTo(new File(folder,newName));
            uploadFile.transferTo(new File(folder.getAbsolutePath(),newName));
            String filepath = req.getScheme()+"://"+req.getServerName()+":"+req.getServerPort()
                    +"uploadFile"+format+newName;
            return filepath;
        }
        catch (IOException e){
            e.printStackTrace();
        }
        return "上传失败";
    }
}
